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  1. Zip and unzip files - Microsoft Support

    Combine several files into a single compressed folder to save storage space or to share them more easily.

  2. Free up drive space in Windows - Microsoft Support

    Here are some ways to free up space so you can keep your PC up to date and running smoothly. These suggestions are listed in order, so start with the first one, see if that helps, and then …

  3. Compress a picture - Microsoft Support

    The compression options in Microsoft Picture Manager reduce both file size and picture dimensions based on how you intend to use the picture, such as in Web pages or e-mail …

  4. Compress your media files - Microsoft Support

    Compress your PowerPoint media files to improve playback performance and save disk space.

  5. Reduce the file size of your Word documents - Microsoft Support

    Learn how to reduce the size of your Word documents.

  6. Zip and unzip files - Microsoft Support

    Combine several files into a single compressed folder to save storage space or to share them more easily.

  7. Compress your media files - Microsoft Support

    Compress your PowerPoint media files to improve playback performance and save disk space.

  8. Reduce the size of your mailbox and Outlook Data Files (.pst and …

    Learn how to find out the size of your mailbox and its folders and how to compact Outlook Data Files (.pst and .ost), which might help improve performance.

  9. Reduce the file size of your PowerPoint presentations

    Learn how to reduce the size of your PowerPoint presentations.

  10. Fix low disk space errors quickly in Windows - Microsoft Support

    Turn on Storage Sense to automatically free up space by removing unnecessary files. Use Cleanup recommendations to identify and delete temporary files, large or unused files, files …

  11. Reduce the file size of a picture in Microsoft Office

    The compression options reduce both the file size and picture dimensions based on how you intend to use the picture, such as viewing on screen or in an email message.